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2500 m3 HOPPER DREDGER

Design description:
2500m3 Hopper Dredger
Vessel name:
T.S.H.D. ’Andre L’
Owner:
DTM, La Rochelle, France
Builder:
Barkmeijer Shipyards B.V., Stroobos, The Netherlands
 
GENERAL DESCRIPTION:
To the France dredging company DTM, Barkmeijer Shipyards delivered the trailing hopper suction dredger ‘Andre L’. This vessel is basically intended for the gaining of sand from the sea. Loading occurs by means of a submerged dredge pump and discharge is possible via four bottom doors and via a shore delivery line and bow coupling. The ship has been constructed with a raked straight stem, a straight stern and a bulbous bow. The propeller runs in a nozzle which is supported to the ship’s hull via a headbox. All accommodations, engine room, navigation bridge and dredging controls are arranged aft. The hopper geometry has been designed enabling good discharging characteristics both for bottom discharging and for shore delivery.
 
 
 
 
PRINCIPAL PARTICULARS
 
 
 
Length over all
84.85
 
m
Length between p.p.
80.30
 
m
Breadth moulded
15.20
 
m
Depth
7.70
 
m
Draught
5.70
 
m
Deadweight (T= 5.70)
3783
 
ton
Dredging draught
6.50
 
m
Deadweight (T= 6.70)
4697
 
ton
GT
2776
 
 
Speed (service)
14
 
kn
 
 
 
 
EQUIPMENT
 
 
 
Main engine
3000
 
kW
Shaft generator
2400
 
kW
Auxiliary engines (2x)
1080
 
kW
Bow thruster
400
 
kW
 
 
 
 
DREDGING PARTICULARS
 
 
 
Diameter of dragarm
600
 
mm
Max. dredge depth
25
 
m
Sand pump output
1700
 
kW
Jet pump output
450
 
kW
Hopper capacity
2300
 
m3
Density of hopper load
1.0 – 2.2
 
t/m3
 
 
 
 
CAPACITIES
 
 
 
Gasoil
232
 
m3
Potable water
46
 
m3
Ballast water
556
 
m3